Chuck Noll, the Hall of Fame coach who led the Steelers to four Super Bowls in the 1970s, died Friday at the age of 82, according to numerous reports out of Pittsburgh. According to the Pittsburgh Tribune Review, Noll's wife, Marianne, found him unresponsive at 9:45 p.m. ET. She called 911, and paramedics pronounced him dead at 9:55 p.m. Noll had stayed out of the public eye in recent years with an illness that had been undisclosed.